<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
     table{
         width:720px;
         line-height: 50px;
     }
     table,th,td{
            border:1px solid #333;
        }
        table{
            border-collapse: collapse;
        } 
        th{
            background-color: #FF8201;
        }
        tr>td:first-child{
            width:100px; 
        }
    </style>
</head>
<body>
    <table>
        <thead>
            <tr><th colspan="2">商城</th></tr>
        </thead>
        <tbody>
                <tr><td>tmall</td><td>苹果</td></tr>
                <tr><td>淘宝</td><td>化为</td></tr>
            </tbody>
    </table>
</body>
</html>